package com.sms.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.sms.reggie.common.R;
import com.sms.reggie.entity.Employee;
import com.sms.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        //将页面提交的密码进行MD5加密
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //判断
        if(emp==null){
            return R.error("登陆失败");
        }

        //比对密码
        if(!emp.getPassword().equals(password)){
            return R.error("登陆失败");
        }

        //查看员工状态是否禁用
        if(emp.getStatus()==0){
            return R.error("账号已禁用");
        }

        //登陆成功，将员工id存入Session并返回登陆成功
        request.getSession().setAttribute("employee",emp.getId());

        return R.success(emp);
    }

    /**
     * 退出
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理session中保存的当前的登录id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，{}",employee.toString());
        //设置初始密码，md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        //获得当前登录的用户id
//        Long empId = (Long) request.getSession().getAttribute("employee");
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);

        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        //构造分页构造器
        Page pageInfo = new Page(page,pageSize);
        //构造条件构造器,动态封装传过来的过滤条件
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        //添加过滤添加
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageInfo,queryWrapper);

        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    //Preparing: UPDATE employee SET status=?, update_time=?, update_user=? WHERE id=?
    //==> Parameters: 0(Integer), 2022-05-08T15:54:01.517(LocalDateTime), 1(Long), 1522569979390079000(Long)
    //<==    Updates: 0
    //原因：js对long类型数据进行处理时丢失精度，导致提交的id和数据库id不一致
    //解决：可以给服务端页面响应json数据时进行处理，将long类型数据转为String字符串
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){

        long id = Thread.currentThread().getId();
        log.info("线程id为{}",id);

//        Long empId = (Long) request.getSession().getAttribute("employee");
//        employee.setUpdateUser(empId);
//        employee.setUpdateTime(LocalDateTime.now());

        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        Employee employee = employeeService.getById(id);
        if(employee!=null){
            return R.success(employee);
        }
        return R.error("没有查到对应员工信息");
    }
}
